63EuEuropium151.9641[Xe] 4f⁷ 6s²
lanthanide
Europium
Europium is a chemical element with symbol Eu and atomic number 63. It was isolated in 1901 and is named after the continent of Europe. It is a moderately hard, silvery metal which readily oxidizes in air and water.
A stylized shell model. Electrons are quantum objects, not particles following these literal paths. Sizes and motion are illustrative.
Electrons by shell
Electron configuration
4f7
6s2
54 is the [Xe] core total across five shells.
At a glance
- Atomic number
- 63
- Atomic mass
- 151.9641 u
- Phase
- Solid
- Density
- 5.264 g/cm³
- Melting point
- 1,099 K
- Boiling point
- 1,802 K
- First ionization energy
- 547.1 kJ/mol
- Electronegativity
- 1.2
- Electron affinity
- 11.2 kJ/mol
- Molar heat capacity
- 27.66 J/(mol·K)
- Period
- 6
- Appearance
- Unavailable
Conditions and isotopes affect measured properties. Some properties of short-lived elements are predicted. Electronegativity uses the Pauling scale.
Keep exploring
Explore the stories, imagery, and reference data in more depth. Properties with no value in the reference are marked unavailable.